Electrophysiologic Investigation: General Concepts The electrophysiologic study should consist of a systematic analysis of dysrhythmias by recording and measuring a variety of electrophysiologic events with the patient in the basal…
Sinus Node Function Disorders of sinus node function are an important cause of cardiac syncope. Approximately 50% of permanent pacemakers implanted at our own and other institutions are for the…
Electrophysiologic Investigation: Technical Aspects Personnel The most important aspects for the performance of safe and valuable electrophysiologic studies are the presence and participation of dedicated personnel. The minimum personnel requirements…
Recurrent Ventricular Tachycardia This chapter will be divided into discrete sections: (a) definitions; (b) pathophysiologic substrates and mechanisms of tachycardias; and (c) electrophysiologic studies (EPS)—modes of initiation, response to stimulation,…
Catheter and Surgical Ablation in the Therapy of Arrhythmias Experience over the last decade has demonstrated that pharmacologic therapy for the management of paroxysmal ventricular and supraventricular arrhythmias may not…
Preexcitation Syndromes Preexcitation exists when, in relation to atrial events, all or some part of the ventricular muscle is activated by the atrial impulse sooner than would be expected if…
Supraventricular Tachycardias The development and refinement of the techniques of intracardiac recording and programmed stimulation, and our ability to compare these findings with experimental models, have resulted in a greater…
Evaluation of Antiarrhythmic Agents The application of recording and stimulation techniques has made it possible to evaluate the electrophysiologic effects and preferential sites of action of the entire spectrum of…
Atrial Flutter and Fibrillation Atrial fibrillation and its cousin, atrial flutter (typical and atypical), are the most common arrhythmias with which we must deal clinically, yet they are the group…
Intraventricular Conduction Disturbances Intraventricular conduction disturbances are the result of abnormal activation of the ventricles. Normal ventricular activation requires the synchronized participation of the distal components of the atrioventricular (A-V)…
